File: libs/js/pidCrypt/javascripts/original scripts/sha1.js

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File: libs/js/pidCrypt/javascripts/original scripts/sha1.js
Role: Example script
Content type: text/plain
Description: Example script
Class: jQuery.pidCrypt
Encrypt form values using RSA and AES
Author: By
Last change:
Date: 5 months ago
Size: 3,423 bytes
 

Contents

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/** * * Secure Hash Algorithm (SHA1) * http://www.webtoolkit.info/ * **/ function SHA1 (msg) { function rotate_left(n,s) { var t4 = ( n<<s ) | (n>>>(32-s)); return t4; }; function lsb_hex(val) { var str=""; var i; var vh; var vl; for( i=0; i<=6; i+=2 ) { vh = (val>>>(i*4+4))&0x0f; vl = (val>>>(i*4))&0x0f; str += vh.toString(16) + vl.toString(16); } return str; }; function cvt_hex(val) { var str=""; var i; var v; for( i=7; i>=0; i-- ) { v = (val>>>(i*4))&0x0f; str += v.toString(16); } return str; }; function Utf8Encode(string) { string = string.replace(/\r\n/g,"\n"); var utftext = ""; for (var n = 0; n < string.length; n++) { var c = string.charCodeAt(n); if (c < 128) { utftext += String.fromCharCode(c); } else if((c > 127) && (c < 2048)) { utftext += String.fromCharCode((c >> 6) | 192); utftext += String.fromCharCode((c & 63) | 128); } else { utftext += String.fromCharCode((c >> 12) | 224); utftext += String.fromCharCode(((c >> 6) & 63) | 128); utftext += String.fromCharCode((c & 63) | 128); } } return utftext; }; var blockstart; var i, j; var W = new Array(80); var H0 = 0x67452301; var H1 = 0xEFCDAB89; var H2 = 0x98BADCFE; var H3 = 0x10325476; var H4 = 0xC3D2E1F0; var A, B, C, D, E; var temp; msg = Utf8Encode(msg); var msg_len = msg.length; var word_array = new Array(); for( i=0; i<msg_len-3; i+=4 ) { j = msg.charCodeAt(i)<<24 | msg.charCodeAt(i+1)<<16 | msg.charCodeAt(i+2)<<8 | msg.charCodeAt(i+3); word_array.push( j ); } switch( msg_len % 4 ) { case 0: i = 0x080000000; break; case 1: i = msg.charCodeAt(msg_len-1)<<24 | 0x0800000; break; case 2: i = msg.charCodeAt(msg_len-2)<<24 | msg.charCodeAt(msg_len-1)<<16 | 0x08000; break; case 3: i = msg.charCodeAt(msg_len-3)<<24 | msg.charCodeAt(msg_len-2)<<16 | msg.charCodeAt(msg_len-1)<<8 | 0x80; break; } word_array.push( i ); while( (word_array.length % 16) != 14 ) word_array.push( 0 ); word_array.push( msg_len>>>29 ); word_array.push( (msg_len<<3)&0x0ffffffff ); for ( blockstart=0; blockstart<word_array.length; blockstart+=16 ) { for( i=0; i<16; i++ ) W[i] = word_array[blockstart+i]; for( i=16; i<=79; i++ ) W[i] = rotate_left(W[i-3] ^ W[i-8] ^ W[i-14] ^ W[i-16], 1); A = H0; B = H1; C = H2; D = H3; E = H4; for( i= 0; i<=19; i++ ) { temp = (rotate_left(A,5) + ((B&C) | (~B&D)) + E + W[i] + 0x5A827999) & 0x0ffffffff; E = D; D = C; C = rotate_left(B,30); B = A; A = temp; } for( i=20; i<=39; i++ ) { temp = (rotate_left(A,5) + (B ^ C ^ D) + E + W[i] + 0x6ED9EBA1) & 0x0ffffffff; E = D; D = C; C = rotate_left(B,30); B = A; A = temp; } for( i=40; i<=59; i++ ) { temp = (rotate_left(A,5) + ((B&C) | (B&D) | (C&D)) + E + W[i] + 0x8F1BBCDC) & 0x0ffffffff; E = D; D = C; C = rotate_left(B,30); B = A; A = temp; } for( i=60; i<=79; i++ ) { temp = (rotate_left(A,5) + (B ^ C ^ D) + E + W[i] + 0xCA62C1D6) & 0x0ffffffff; E = D; D = C; C = rotate_left(B,30); B = A; A = temp; } H0 = (H0 + A) & 0x0ffffffff; H1 = (H1 + B) & 0x0ffffffff; H2 = (H2 + C) & 0x0ffffffff; H3 = (H3 + D) & 0x0ffffffff; H4 = (H4 + E) & 0x0ffffffff; } var temp = cvt_hex(H0) + cvt_hex(H1) + cvt_hex(H2) + cvt_hex(H3) + cvt_hex(H4); return temp.toLowerCase(); }